Latest Facebook Lite 81 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; GT-S7580 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 4 Galaxy Trend Plus
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; GT-I9500 Build/JOP40D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 4 Galaxy S4
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; GT-I9060 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 4 Galaxy Grand Neo
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; ALCATEL ONE TOUCH 7041X Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.2 Mobile Safari/534.30 SVN/080FPG1[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 4 One Touch Pop C7
Mozilla/5.0 (Linux; U; Android 4.1.2; uk-ua; LG-P765 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/uk_UA;FBAV/81.0.0.11.188;] Android 4 P765
Mozilla/5.0 (Linux; U; Android 4.1.2; pt-pt; ST26i Build/11.2.A.0.31) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 4 Xperia J
Mozilla/5.0 (Linux; U; Android 4.1.2; pt-pt; GT-S5310 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 4 Galaxy POCKET Neo
Mozilla/5.0 (Linux; U; Android 4.1.2; fr-fr; GT-I9128V Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/fr_FR;FBAV/81.0.0.11.188;] Android 4 Galaxy Grand
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; LG-D500 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/en_US;FBAV/81.0.0.11.188;] Android 4 D500
Mozilla/5.0 (Linux; Android 7.1.2; Redmi 4X Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/62.0.3202.84 Mobile Safari/537.36[FBAN/EMA;FBLC/en_GB;FBAV/81.0.0.11.188;] Android 7 Redmi 4X
Mozilla/5.0 (Linux; Android 7.1.1; VFD 510 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 7 Smart E8
Mozilla/5.0 (Linux; Android 7.0; STARNAUTE4 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 7 StarNaute 4
Mozilla/5.0 (Linux; Android 7.0; STARNAUTE4 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 7 StarNaute 4
Mozilla/5.0 (Linux; Android 7.0; SM-J710F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36[FBAN/EMA;FBLC/en_GB;FBAV/81.0.0.11.188;] Android 7 Galaxy J7
Mozilla/5.0 (Linux; Android 7.0; SM-J530F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 7 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 7.0; F3113 Build/33.3.A.1.97; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36[FBAN/EMA;FBLC/ru_RU;FBAV/81.0.0.11.188;] Android 7 Xperia XA
Mozilla/5.0 (Linux; Android 6.0; VFD 700 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 6 Smart Ultra 7
Mozilla/5.0 (Linux; Android 6.0; VFD 500 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 6 Smart Turbo 7
Mozilla/5.0 (Linux; Android 6.0; SUNNY Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/81.0.0.11.188;] Android 6 Sunny
Mozilla/5.0 (Linux; Android 6.0; SUNNY Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/62.0.3202.84 Mobile Safari/537.36[FBAN/EMA;FBLC/es_ES;FBAV/81.0.0.11.188;] Android 6 Sunny